Presentment and to Notify Customer of Dishonor.
A bank which takes a documentary draft for collection must present  or
  send  the  draft  and  accompanying  documents  for presentment and upon
  learning that the draft has not been paid or accepted in due course must
  seasonably notify its customer of such fact  even  though  it  may  have
  discounted  or  bought  the  draft  or  extended  credit  available  for
  withdrawal as of right.